@startuml
package com.iluwatar.model.view.presenter {
  class App {
    + App()
    + main(args : String[]) {static}
  }
  class FileLoader {
    - LOGGER : Logger {static}
    - fileName : String
    - loaded : boolean
    - serialVersionUID : long {static}
    + FileLoader()
    + fileExists() : boolean
    + getFileName() : String
    + isLoaded() : boolean
    + loadData() : String
    + setFileName(fileName : String)
  }
  class FileSelectorJFrame {
    - area : JTextArea
    - cancel : JButton
    - contents : JLabel
    - fileName : String
    - info : JLabel
    - input : JTextField
    - ok : JButton
    - panel : JPanel
    - presenter : FileSelectorPresenter
    - serialVersionUID : long {static}
    + FileSelectorJFrame()
    + actionPerformed(e : ActionEvent)
    + close()
    + displayData(data : String)
    + getFileName() : String
    + getPresenter() : FileSelectorPresenter
    + isOpened() : boolean
    + open()
    + setFileName(name : String)
    + setPresenter(presenter : FileSelectorPresenter)
    + showMessage(message : String)
  }
  class FileSelectorPresenter {
    - loader : FileLoader
    - serialVersionUID : long {static}
    - view : FileSelectorView
    + FileSelectorPresenter(view : FileSelectorView)
    + cancelled()
    + confirmed()
    + fileNameChanged()
    + setLoader(loader : FileLoader)
    + start()
  }
  class FileSelectorStub {
    - dataDisplayed : boolean
    - name : String
    - numOfMessageSent : int
    - opened : boolean
    - presenter : FileSelectorPresenter
    + FileSelectorStub()
    + close()
    + dataDisplayed() : boolean
    + displayData(data : String)
    + getFileName() : String
    + getMessagesSent() : int
    + getPresenter() : FileSelectorPresenter
    + isOpened() : boolean
    + open()
    + setFileName(name : String)
    + setPresenter(presenter : FileSelectorPresenter)
    + showMessage(message : String)
  }
  interface FileSelectorView {
    + close() {abstract}
    + displayData(String) {abstract}
    + getFileName() : String {abstract}
    + getPresenter() : FileSelectorPresenter {abstract}
    + isOpened() : boolean {abstract}
    + open() {abstract}
    + setFileName(String) {abstract}
    + setPresenter(FileSelectorPresenter) {abstract}
    + showMessage(String) {abstract}
  }
}
FileSelectorJFrame -->  "-presenter" FileSelectorPresenter
FileSelectorStub -->  "-presenter" FileSelectorPresenter
FileSelectorPresenter -->  "-view" FileSelectorView
FileSelectorPresenter -->  "-loader" FileLoader
FileSelectorJFrame ..|> FileSelectorView 
FileSelectorStub ..|> FileSelectorView 
@enduml